Calling a sub:

my $sub = \&$name;
$sub->( @args )
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Optionally, you can add the following:

die "No sub named `$name`" if !defined( &$sub );
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Note that \&$name will create an undefined sub if it doesn't already exists.

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Calling a method:

$invocant->$name( @args )
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Calling a method (alternative):

my $method = $invocant->can( $name );
$invocant->$method( @args )
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Optionally, you can add the following to the alternative approach:

die "No method named `$name`" if !$method;
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Strict refs prevents none of these.